<template>
<div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator=">">
    <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
    <el-breadcrumb-item>用户管理</el-breadcrumb-item>
    <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card class="box-card">
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
          <template #append>
          <el-button @click="getUserList">
            <el-icon><Search /></el-icon>
          </el-button>
          </template>
          </el-input>
        </el-col>
        
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>

      <!-- 用户列表区域 -->
      <el-table :data="userList" border stripe>
        <el-table-column label="#" type="index" />
        <el-table-column label="姓名" prop="username" />
        <el-table-column label="邮箱" prop="email" />
        <el-table-column label="电话" prop="mobile" />
        <el-table-column label="角色" prop="role_name" />
        <el-table-column label="状态" prop="mg_state">
          <!-- 作用域插槽 -->
          <template #default="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template #default="scope">
            <!-- 修改按钮 -->
            <el-button type="primary" size="small" @click="showEditDialog(scope.row.id)">
              <el-icon><Edit /></el-icon>
            </el-button>
            <!-- 删除按钮 -->
            <el-button  type="danger" size="small" @click="removeUserById(scope.row.id)">
              <el-icon><Delete /></el-icon>
            </el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip class="box-item" effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" size="small" @click="setRole(scope.row)">
                <el-icon><Setting /></el-icon>
              </el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination
      v-model:currentPage="queryInfo.pagenum"
      v-model:page-size="queryInfo.pagesize"
      :page-sizes="[1, 2, 5, 10]"
      layout="total, sizes, prev, pager, next, jumper"
      :total="total"
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
      />
    </el-card>

    <!-- 添加用户的对话框 -->
    <el-dialog
      v-model="addDialogVisible"
      title="添加用户"
      width="50%"
      @close="addDialogClosed"
    >
    <!-- 内容主题区 -->
    <el-form
    ref="addFormRef"
    :model="addForm"
    status-icon
    :rules="addFormRules"
    label-width="70px"
    >

    <el-form-item label="用户名" prop="username">
      <el-input v-model="addForm.username" />
    </el-form-item>
    <el-form-item label="密码" prop="password">
      <el-input v-model="addForm.password" />
    </el-form-item>
    <el-form-item label="邮箱" prop="email">
      <el-input v-model="addForm.email" />
    </el-form-item>
    <el-form-item label="手机" prop="mobile">
      <el-input v-model="addForm.mobile" />
    </el-form-item>

    </el-form>
    
      <!-- 底部区域 -->
      <template #footer>
        <span class="dialog-footer">
          <el-button @click="addDialogVisible = false">取消</el-button>
          <el-button type="primary" @click="addUser"
            >确定</el-button
          >
        </span>
      </template>
    </el-dialog>

    <!-- 修改用户的对话框 -->
    <el-dialog
      v-model="editDialogVisible"
      title="修改用户"
      width="50%"
      @close="editDialogClosed"
    >
    <el-form
    ref="editFormRef"
    :model="editForm"
    :rules="editFormRules"
    label-width="70px"
  >
      <el-form-item label="用户名">
      <el-input v-model="editForm.username" disabled />
      </el-form-item>
      <el-form-item label="邮箱" prop="email">
      <el-input v-model="editForm.email"  />
      </el-form-item>
      <el-form-item label="手机" prop="mobile">
      <el-input v-model="editForm.mobile"  />
      </el-form-item>

    </el-form>
      <template #footer>
        <span class="dialog-footer">
          <el-button @click="editDialogVisible = false">取消</el-button>
          <el-button type="primary" @click="editUserInfo"
            >确定</el-button
          >
        </span>
      </template>
    </el-dialog>

    <!-- 分配角色的对话框 -->
    <el-dialog
    v-model="setRoleDialogVisible"
    title="分配角色"
    width="50%"
    @click="setRoleDialogClosed"
    >
      <div>
        <p>当前的用户:{{userInfo.username}}</p>
        <p>当前的角色:{{userInfo.role_name}}</p>
        <p>分配新角色:
          <el-select v-model="selectedRoleId" class="m-2" placeholder="请选择">
            <el-option
              v-for="item in rolesList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id"
            />
          </el-select>
        </p>
      </div>
      <template #footer>
        <span class="dialog-footer">
          <el-button @click="setRoleDialogVisible = false">取消</el-button>
          <el-button type="primary" @click="saveRoleInfo">
            确定
          </el-button>
        </span>
      </template>
    </el-dialog>
  </div>  
</template>

<script>
import { ElMessage, ElMessageBox } from 'element-plus'
export default {
  data() {
    // 验证邮箱的规则
    let checkEmail = (rule, value, cb) => {
      // 验证邮箱的正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/

      if (regEmail.test(value)) {
          // 合法的邮箱
          return cb()
      }

      cb(new Error('请输入合法的邮箱'))
    }

    let checkMobile = (rule, value, cb) => {
      // 验证手机号的正则表达式
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/

      if (regMobile.test(value)) {
          // 合法的手机号
          return cb()
      }

      cb(new Error('请输入合法的手机号'))
    }

    return {
      // 获取用户列表参数的对象
      queryInfo: {
        query: '',
        // 当前的页数
        pagenum: 1,
        // 当前每页显示多少条数据
        pagesize: 2
      },
      userList: [],
      total: 0,
      // 控制添加用户对话框的显示和隐藏
      addDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加表单的验证规则对象
      addFormRules: {
        username: [
          {
            required: true,
            message: '请输入用户名',
            trigger: 'blur'
          }, {
            min: 3,
            max: 10,
            message: '用户名长度在3~10个字符之间',
            trigger: 'blur'
          }
        ],
        password: [
          {
            required: true,
            message: '请输入密码',
            trigger: 'blur'
          }, {
            min: 3,
            max: 10,
            message: '用户名长度在6~15个字符之间',
            trigger: 'blur'
          }
        ],
        email: [
          {
            required: true,
            message: '请输入邮箱',
            trigger: 'blur'
          }, {
            validator: checkEmail,
            trigger: 'blur'
          }
        ],
        mobile: [
          {
            required: true,
            message: '请输入手机号码',
            trigger: 'blur'
          }, {
            validator: checkMobile,
            trigger: 'blur'
          }
        ]
      },
      editDialogVisible: false,
      // 查询到的用户信息对象
      editForm: {},
      // 修改表单的验证规则对象
      editFormRules: {
        email: [
          { required: true, message: '请输入用户邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur'}
        ],
        mobile: [
          { required: true, message: '请输入手机号码', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur'}
        ]
      },
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: {},
      // 所有角色的数据列表
      rolesList: [],
      // 已选中的角色Id值
      selectedRoleId: ''
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    async getUserList() {
      const { data: res } = await this.$http.get('users', {
        params: this.queryInfo
      })
      if (res.meta.status !== 200) return this.$message.error('获取用户列表失败！');

      this.userList = res.data.users
      this.total = res.data.total
    },
    // 监听pagesize改变事件
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听页码 值 改变的事件
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 监听 switch 开关的状态
    async userStateChanged(userinfo) {
      const { data: res } = await this.$http.put(`users/${userinfo.id}/state/
      ${userinfo.mg_state}`)
      if (res.meta.status !== 200)
      {
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('更新用户状态失败')
      }
      this.$message.success('更新用户状态成功')
    },
    // 监听 添加用户对话框关闭 事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    // 添加用户
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return

        // 发起添加用户的网络请求
        const {data: res} = await this.$http.post('users', this.addForm)

        if (res.meta.status !== 201) {
          this.$message.error('添加用户失败!')
        }

        this.$message.success('添加用户成功！')
        // 隐藏添加用户对话框
        this.addDialogVisible = false
        this.getUserList()
      })
    },
    // 展示编辑用户的对话框
    async showEditDialog(id) {
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('查询数据失败');  
      }
      this.editForm = res.data

      this.editDialogVisible = true
    },
    // 监听修改用户对话框的关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },

    // 修改用户信息并提交
    editUserInfo() {
      this.$refs.editFormRef.validate( async valid => {
        if (!valid) return
        const { data: res } = await this.$http.put('users/' + this.editForm.id, {
          email: this.editForm.email,
          mobile:this.editForm.mobile
        })
        console.log(res)
        if (res.meta.status !== 200)
        {
          return this.$message.error('更新用户失败')
        }
        this.editDialogVisible = false
        this.getUserList()
        this.$message.success('更新成功')
      })
    },

    //  根据id删除对应用户
    async removeUserById(id) {
      await ElMessageBox.confirm(
        '将永久删除，是否继续',
        '警告',
        {
          confirmButtonText: '确认',
          cancelButtonText: '取消',
          type: 'warning',
        }).then(async () => {
          
          ElMessage({
            type: 'success',
            message: '删除成功',
          })
          await this.$http.delete('users/' + id)
        })
        .catch(() => {
          ElMessage({
            type: 'info',
            message: '取消删除',
          })
        })
      this.getUserList()
      // const { data: res } = await this.$http.delete('users/' + id)
      //   if(res.meta.status !== 200) return this.$message.error('删除用户失败')

      //   this.$message.success('删除用户成功')
        // this.getUserList()
    },

    // 展示分配角色的对话框
    async setRole(userInfo) {
      this.userInfo = userInfo
      // 在展示对话框之前,获取所有角色列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error("获取角色列表失败！")
      }

      this.rolesList = res.data

      this.setRoleDialogVisible = true
    },

    // 点击按钮，分配角色
    async saveRoleInfo() {
      if (!this.selectedRoleId) {
        return this.$message.error('请选择要分配的角色')
      }

      const { data: res } = await this.$http.put(
        `users/${this.userInfo.id}/role`,
        {
        rid: this.selectedRoleId
        }
      )

      if (res.meta.status !== 200) {
        return this.$message.error('更新角色失败')
      }

      this.$message.success('更新角色成功')
      this.getUserList()
      this.setRoleDialogVisible = false
    },

    // 监听分配角色对话框的关闭事件
    setRoleDialogClosed() {
      this.selectedRoleId = ''
      this.userInfo = {}
    }
   
  }
}
</script>

<style lang="less" scoped>

</style>